assume cs:codesg

codesg segment
start:
		mov ax,1100H ;ax=1100h
		mov bx,0011H ;bx=0011h
		xor ax,bx	;ax=ax⊕bx-->ax=1100h⊕0011h=1111h
		xor bx,ax	;bx=bx⊕ax-->bx=0011h⊕1111h=1100h
		xor ax,bx	;ax=ax⊕bx-->ax=1111h⊕1100h=0011h
		
		mov ax,4c00H
		int 21H
codesg ends
end start